The recent crash in oil prices is causing much anxiety in oil-producing states. From Iran to Venezuela, many have come to rely on elevated oil prices to fuel economic growth and support government spending.

Earlier this week, it was reported by The Wall Street Journal that President Barack Obama had sent a secret letter to the Iranian Supreme Leader Ayatollah Ali Khamenei, urging him to accept the terms of a comprehensive agreement with the United States and other major world powers on the issue of Iran's nuclear programme.

On 16 October, the Defence Secretary, Michael Fallon, announced that part of the UK Reaper drone fleet would be deployed in Iraq to support coalition efforts against the terror group ISIL. This week, he confirmed they would also be flying surveillance missions over Syria. These events mark the first operational use of UK Reapers outside Afghanistan and represent a significant and timely development in the UK government's stated policy towards 'drone warfare'. The overwhelming vote in the House of Commons in support of military action endorsed the firm legal basis for the UK's use of force in collective defence of a friendly government.

On 26 September, British parliament approved the Cameron government's request for authority to carry out air strikes inside Iraq on the Islamic State terror group. Four days later, two Tornado jets on an 'armed surveillance' mission dropped the first bombs, hitting a jihadist heavy-weapon position and an armed pick-up truck.